Windows and Doors in the Net-Zero Frame

A wider selection of high-performance windows and doors is expected to hit the market as Canada’s National Energy Code continues to push the envelope toward net-zero-energy-ready development. A new slate of proposed code changes, released for public review earlier this winter, include downward adjustment of permitted thresholds for heat loss through the building envelope and air leakage at the juncture of building components and assemblies. Developers and designers adhering to the code’s prescriptive path would also face stricter constraints on the number and/or size of windows in almost all of Canada’s climate zones. Read more…